INTRODUCTION TO XRD Unit cell: the building block of crystalline solids z The parameters that define a unit cell are: a, b, c = unit cell dimensions along x, y, z respectively…

1. Essential Parts of the Diffractometer• X-ray Tube: the source of X Rays• Incident-beam optics: condition the X-ray beambefore it hits the sample• The goniometer:…

Slide 1Objectives By the end of this section you should: understand the concept of diffraction in crystals be able to derive and use Braggs law know how X-rays are produced…

Slide 1Objectives By the end of this section you should: understand the concept of planes in crystals know that planes are identified by their Miller Index and their separation,…

Rajesh Katoch PhD, MSE IIT Kanpur Crystal structure approximation using Rietveld Refinement technique: Part 1 Bragg’s law: nλ= 2dsinθ where ‘n’ is the order of diffraction…

Internal – External Order We described symmetry of crystal habit (32 point groups) We also looked at internal ordering of atoms in 3-D structure (230 space groups) X-ray…

X-ray Diffraction: Basic Principles, Bragg’s Law, Powder Method, Applications of X-ray Diffraction. Defects in Crystals: Point Defects: Vacancies, Substitutional, Interstitial,…

      VALLIAMMAI ENGINEERING COLLEGE SRM NAGAR, KATTANKULATHUR – 603 203 PHYSICS PRACTICALS MANUAL (First semester B.E/B.Tech. students for the Academic Year 2014-2015)…

Internal – External Order We described symmetry of crystal habit (32 point groups) We also looked at internal ordering of atoms in 3-D structure (230 space groups) X-ray…